Improvement in embroidering attachments for sewing-machines



01., E. HART. Emb'r'oidering Attachment for Sewing-Machines.

No. 200,452. Patented Feb. 19,1878.

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.pzzi@ NJEYERS. PHOTO-LITHOGRAPHER, WASHINGTON. Dv S3,

UNITED STATES PATENT OFFICE.

GEORGE E. HART, OF NEWARK, NEW JERSEY, ASSIGNOR TO AMASA MASON, OF NEWYORK, N. Y.

IMPROVEMENT IN EMBROIDERING ATTACHMENTS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 200,452,.dated February19, 1878; application filed December 31, 1877.

To all whom it may concern:

Be it known that I, GEORGE E. HART, of the city of Newark, in the Stateof New J ersey, have invented an Improved Braid-Making and EmbroideringSewing-Machine Attachment, of which the following is a specification,reference being had to the accompanying drawings, in which is shown, in

Figure 1, a side elevation of the said attachment embodying myinvention. Fig. 2 is a vertical central section of the same; Fig. 3, abottom view of the same with the bottom plate removed, exposing to viewthe interior mechanism; Fig. 4, a plan of the forked arm Gr, (seen inFigs. 1 and 2 Fig. 5, an enlarged sectional view of the lower part ofFig. 2; and Figs. 6, 7, 8,,and 9, detailed views of the laying-hub andloop-carrier.

The entire mechanism whereby the braidmaking and embroidering areaccomplished is combined with, and carried by, what is known as thepresser-foot of a sewing-machine, and is therefore adapted to beemployed on the sewing-machines in general use.

A represents a resser-foot, which carries the devices whose specialoffice is to throw the braid-making and embroidering thread, so as toform with it the desired stitch. The form of the same which is used isrepresented, con sisting of a fixed laying-hub, B, and rotaryreciprocating loop-carrier O, being the same in form and operation asare described and shown in Letters Patent of the United States N 0.183,330, dated October 17, 1876, and for the construction and operationof said hub and loop-carrier reference is made to said patent.

D and E are two gears, the former being onan annulus surrounding andformed on or secured to the carrier 0, and the latter atoothed wheel ordisk secured on the shaft F. This shaft F is arranged to rotate inbearings at its ends, the lower one being in the lower or horizontalpart c of the presser-foot, and the upper one in the bracket 0, or armsecured to or formed on the said foot. This shaft is formed of a flatbar, which is twisted, as shown in the drawings, thus forming along-pitched screw.

G is an arm, to be secured upon the needlebar, a piece of whichneedle-bar is intended to be represented at d. This arm is forked at itsouter end, as shown in the drawings, the two parts or fingers e 0 beingadapted to embrace the bar or shaft F, and fitted to slide loosely upand down the same over the twist or screw, thereby imparting to it areciprocating rotary motion, as the needle-bar is verticallyreciprocated in the act of sewing. By these means the loop-carrier O hasgiven to it the requisite reciprocating rotary motion, the same beingcommunicated to it from the said shaft F through the gears D E.

The several parts are so proportioned and adapted that the precisemotion is given to the said loop-carrier that is required, as describedin the said beforenamed patent; and this any competent mechanic willknow how to accomplish.

The necessary cessation of motion of the loop-carrier, after beingrotated by the upward movement of the needle-bar and before it commencesits reverse rotation, is accomplished by leaving a portion of the shaftF at its upper end plane, as at f.

In place of the twisted or screw shaftF and forked arm G, if preferred,the shaft may be i a cylinder having a spiral groove or slot, with a pinin the arm G working in said slot or groove.

The advantages of my improvement are obvious. The devices have apositive motion, are simple and not liable to get out of order innse,and it gives the opportunity of making the presserfoot quite thin,thereby enaber, 1877.

GEORGE E. HART. Witnesses:

F. A. J ORGENSEN, OHAs. W. HOWELL.

